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/*
* Copyright (c) 2007-2011 Intel Corporation. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file va_compat.h
* \brief The Compatibility API
*
* This file contains the \ref api_compat "Compatibility API".
*/
#ifndef VA_COMPAT_H
#define VA_COMPAT_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* \defgroup api_compat Compatibility API
*
* The Compatibility API allows older programs that are not ported to
* the current API to still build and run correctly. In particular,
* this exposes older API to allow for backwards source compatibility.
*
* @{
*/
/**
* Makes a string literal out of the macro argument
*/
#define VA_CPP_HELPER_STRINGIFY(x) \
VA_CPP_HELPER_STRINGIFY_(x)
#define VA_CPP_HELPER_STRINGIFY_(x) \
#x
/**
* Concatenates two macro arguments at preprocessing time.
*/
#define VA_CPP_HELPER_CONCAT(a, b) \
VA_CPP_HELPER_CONCAT_(a, b)
#define VA_CPP_HELPER_CONCAT_(a, b) \
a ## b
/**
* Generates the number of macro arguments at preprocessing time.
* <http://groups.google.com/group/comp.std.c/browse_thread/thread/77ee8c8f92e4a3fb/346fc464319b1ee5>
*
* Note: this doesn't work for macros with no arguments
*/
#define VA_CPP_HELPER_N_ARGS(...) \
VA_CPP_HELPER_N_ARGS_(__VA_ARGS__, VA_CPP_HELPER_N_ARGS_LIST_REV())
#define VA_CPP_HELPER_N_ARGS_(...) \
VA_CPP_HELPER_N_ARGS_LIST(__VA_ARGS__)
#define VA_CPP_HELPER_N_ARGS_LIST(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a12, a13, a14, a15, a16, N, ...) N
#define VA_CPP_HELPER_N_ARGS_LIST_REV() \
15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
/**
* Generates a versioned function alias.
*
* VA_CPP_HELPER_ALIAS(vaSomeFunction, 0,32,0) will generate
* .symber vaSomeFunction_0_32_0, vaSomeFunction@VA_API_0.32.0
*/
#define VA_CPP_HELPER_ALIAS(func, major, minor, micro) \
VA_CPP_HELPER_ALIAS_(func, major, minor, micro, "@")
#define VA_CPP_HELPER_ALIAS_DEFAULT(func, major, minor, micro) \
VA_CPP_HELPER_ALIAS_(func, major, minor, micro, "@@")
#define VA_CPP_HELPER_ALIAS_(func, major, minor, micro, binding) \
asm(".symver " #func "_" #major "_" #minor "_" #micro ", " \
#func binding "VA_API_" #major "." #minor "." #micro)
/* vaCreateSurfaces() */
#ifndef VA_COMPAT_DISABLED
#define vaCreateSurfaces(dpy, ...) \
VA_CPP_HELPER_CONCAT(vaCreateSurfaces, \
VA_CPP_HELPER_N_ARGS(dpy, __VA_ARGS__)) \
(dpy, __VA_ARGS__)
#endif
#define vaCreateSurfaces6(dpy, width, height, format, num_surfaces, surfaces) \
(vaCreateSurfaces)(dpy, format, width, height, surfaces, num_surfaces, \
NULL, 0)
#define vaCreateSurfaces8(dpy, format, width, height, surfaces, num_surfaces, attribs, num_attribs) \
(vaCreateSurfaces)(dpy, format, width, height, surfaces, num_surfaces, \
attribs, num_attribs)
/*@}*/
#ifdef __cplusplus
}
#endif
#endif /* VA_COMPAT_H */
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